Grams (Jennifer Rhodes) is summoned to prepare Chris for a Wiccan rite and accidentally reverts the sisters to their preteen personalities; Leo consults an oracle (Charisma Carpenter) as Wyatt is menaced by an unknown demon.

A couple are murdered in their home while their young daughter escapes the killer. The investigation centers on a neighboring house, where Ray discovers evidence that a serial killer, known as Dr. Jekyll, lives there.